Endurance training helps strengthen a very important muscle - the heart. With regular cardiovascular exercise, even older people can stay as physically fit as a 30-year-old. Endurance exercise strengthens the cardiovascular system and helps keep us trim. If you go to the gym, working out on an elliptical trainer or a stationary bike is an excellent way to give your endurance a boost.
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People who are overweight or who suffer from joint problems are best advised to avoid the treadmill.